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jsribosome.go
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jsribosome.go
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// Copyright (C) 2013-2018, The MetaCurrency Project (Eric Harris-Braun, Arthur Brock, et. al.)
// Use of this source code is governed by GPLv3 found in the LICENSE file
//----------------------------------------------------------------------------------------
// JSRibosome implements a javascript use of the Ribosome interface
package holochain
import (
"encoding/json"
"errors"
"fmt"
. "github.com/holochain/holochain-proto/hash"
peer "github.com/libp2p/go-libp2p-peer"
"github.com/robertkrimen/otto"
"strings"
"time"
)
const (
JSRibosomeType = "js"
ErrHandlingReturnErrorsStr = "returnErrorValue"
ErrHandlingThrowErrorsStr = "throwErrors"
)
// JSRibosome holds data needed for the Javascript VM
type JSRibosome struct {
h *Holochain
zome *Zome
vm *otto.Otto
lastResult *otto.Value
}
// Type returns the string value under which this ribosome is registered
func (jsr *JSRibosome) Type() string { return JSRibosomeType }
// ChainGenesis runs the application genesis function
// this function gets called after the genesis entries are added to the chain
func (jsr *JSRibosome) ChainGenesis() (err error) {
err = jsr.boolFn("genesis", "")
return
}
// BridgeGenesis runs the bridging genesis function
// this function gets called on both sides of the bridging
func (jsr *JSRibosome) BridgeGenesis(side int, dnaHash Hash, data string) (err error) {
err = jsr.boolFn("bridgeGenesis", fmt.Sprintf(`%d,"%s","%s"`, side, dnaHash.String(), jsSanitizeString(data)))
return
}
func (jsr *JSRibosome) boolFn(fnName string, args string) (err error) {
var v otto.Value
v, err = jsr.vm.Run(fnName + "(" + args + ")")
if err != nil {
err = fmt.Errorf("Error executing %s: %v", fnName, err)
return
}
if v.IsBoolean() {
var b bool
b, err = v.ToBoolean()
if err != nil {
return
}
if !b {
err = fmt.Errorf("%s failed", fnName)
}
} else {
err = fmt.Errorf("%s should return boolean, got: %v", fnName, v)
}
return
}
// Receive calls the app receive function for node-to-node messages
func (jsr *JSRibosome) Receive(from string, msg string) (response string, err error) {
var code string
fnName := "receive"
code = fmt.Sprintf(`JSON.stringify(%s("%s",JSON.parse("%s")))`, fnName, from, jsSanitizeString(msg))
jsr.h.Debug(code)
var v otto.Value
v, err = jsr.vm.Run(code)
if err != nil {
err = fmt.Errorf("Error executing %s: %v", fnName, err)
return
}
response, err = v.ToString()
return
}
// BundleCancel calls the app bundleCanceled function
func (jsr *JSRibosome) BundleCanceled(reason string) (response string, err error) {
var code string
fnName := "bundleCanceled"
bundle := jsr.h.chain.BundleStarted()
if bundle == nil {
err = ErrBundleNotStarted
return
}
code = fmt.Sprintf(`%s("%s",JSON.parse("%s"))`, fnName, jsSanitizeString(reason), jsSanitizeString(bundle.userParam))
jsr.h.Debug(code)
var v otto.Value
v, err = jsr.vm.Run(code)
if err != nil {
err = fmt.Errorf("Error executing %s: %v", fnName, err)
return
}
response, err = v.ToString()
return
}
// ValidatePackagingRequest calls the app for a validation packaging request for an action
func (jsr *JSRibosome) ValidatePackagingRequest(action ValidatingAction, def *EntryDef) (req PackagingReq, err error) {
var code string
fnName := "validate" + strings.Title(action.Name()) + "Pkg"
code = fmt.Sprintf(`%s("%s")`, fnName, def.Name)
jsr.h.Debug(code)
var v otto.Value
v, err = jsr.vm.Run(code)
if err != nil {
err = fmt.Errorf("Error executing %s: %v", fnName, err)
return
}
if v.IsObject() {
var m interface{}
m, err = v.Export()
if err != nil {
return
}
req = m.(map[string]interface{})
} else if v.IsNull() {
} else {
err = fmt.Errorf("%s should return null or object, got: %v", fnName, v)
}
return
}
func prepareJSEntryArgs(def *EntryDef, entry Entry, header *Header) (args string, err error) {
entryStr := entry.Content().(string)
switch def.DataFormat {
case DataFormatRawJS:
args = entryStr
case DataFormatString:
args = "\"" + jsSanitizeString(entryStr) + "\""
case DataFormatLinks:
fallthrough
case DataFormatJSON:
args = fmt.Sprintf(`JSON.parse("%s")`, jsSanitizeString(entryStr))
default:
err = errors.New("data format not implemented: " + def.DataFormat)
return
}
var hdr string
if header != nil {
hdr = fmt.Sprintf(
`{"EntryLink":"%s","Type":"%s","Time":"%s"}`,
header.EntryLink.String(),
header.Type,
header.Time.UTC().Format(time.RFC3339),
)
} else {
hdr = `{"EntryLink":"","Type":"","Time":""}`
}
args += "," + hdr
return
}
func prepareJSValidateArgs(action Action, def *EntryDef) (args string, err error) {
switch t := action.(type) {
case *ActionPut:
args, err = prepareJSEntryArgs(def, t.entry, t.header)
case *ActionCommit:
args, err = prepareJSEntryArgs(def, t.entry, t.header)
case *ActionMod:
args, err = prepareJSEntryArgs(def, t.entry, t.header)
if err == nil {
args += fmt.Sprintf(`,"%s"`, t.replaces.String())
}
case *ActionDel:
args = fmt.Sprintf(`"%s"`, t.entry.Hash.String())
case *ActionLink:
var j []byte
j, err = json.Marshal(t.links)
if err == nil {
args = fmt.Sprintf(`"%s",JSON.parse("%s")`, t.validationBase.String(), jsSanitizeString(string(j)))
}
default:
err = fmt.Errorf("can't prepare args for %T: ", t)
return
}
return
}
func buildJSValidateAction(action Action, def *EntryDef, pkg *ValidationPackage, sources []string) (code string, err error) {
fnName := "validate" + strings.Title(action.Name())
var args string
args, err = prepareJSValidateArgs(action, def)
if err != nil {
return
}
srcs := mkJSSources(sources)
var pkgObj string
if pkg == nil || pkg.Chain == nil {
pkgObj = "{}"
} else {
var j []byte
j, err = json.Marshal(pkg.Chain)
if err != nil {
return
}
pkgObj = fmt.Sprintf(`{"Chain":%s}`, j)
}
code = fmt.Sprintf(`%s("%s",%s,%s,%s)`, fnName, def.Name, args, pkgObj, srcs)
return
}
// ValidateAction builds the correct validation function based on the action an calls it
func (jsr *JSRibosome) ValidateAction(action Action, def *EntryDef, pkg *ValidationPackage, sources []string) (err error) {
var code string
code, err = buildJSValidateAction(action, def, pkg, sources)
if err != nil {
return
}
jsr.h.Debug(code)
err = jsr.runValidate(action.Name(), code)
return
}
func mkJSSources(sources []string) (srcs string) {
srcs = `["` + strings.Join(sources, `","`) + `"]`
return
}
func (jsr *JSRibosome) prepareJSValidateEntryArgs(def *EntryDef, entry Entry, sources []string) (e string, srcs string, err error) {
c := entry.Content().(string)
switch def.DataFormat {
case DataFormatRawJS:
e = c
case DataFormatString:
e = "\"" + jsSanitizeString(c) + "\""
case DataFormatLinks:
fallthrough
case DataFormatJSON:
e = fmt.Sprintf(`JSON.parse("%s")`, jsSanitizeString(c))
default:
err = errors.New("data format not implemented: " + def.DataFormat)
return
}
srcs = mkJSSources(sources)
return
}
func (jsr *JSRibosome) runValidate(fnName string, code string) (err error) {
var v otto.Value
v, err = jsr.vm.Run(code)
if err != nil {
err = fmt.Errorf("Error executing %s: %v", fnName, err)
return
}
if v.IsBoolean() {
var b bool
b, err = v.ToBoolean()
if err != nil {
return
}
if !b {
err = ValidationFailed()
}
} else if v.IsString() {
var s string
s, err = v.ToString()
if err != nil {
return
}
if s != "" {
err = ValidationFailed(s)
}
} else {
err = fmt.Errorf("%s should return boolean or string, got: %v", fnName, v)
}
return
}
func (jsr *JSRibosome) validateEntry(fnName string, def *EntryDef, entry Entry, header *Header, sources []string) (err error) {
e, srcs, err := jsr.prepareJSValidateEntryArgs(def, entry, sources)
if err != nil {
return
}
hdr := fmt.Sprintf(
`{"EntryLink":"%s","Type":"%s","Time":"%s"}`,
header.EntryLink.String(),
header.Type,
header.Time.UTC().Format(time.RFC3339),
)
code := fmt.Sprintf(`%s("%s",%s,%s,%s)`, fnName, def.Name, e, hdr, srcs)
jsr.h.Debugf("%s: %s", fnName, code)
err = jsr.runValidate(fnName, code)
return
}
const (
JSLibrary = `var HC={Version:` + `"` + VersionStr + "\"" +
`SysEntryType:{` +
`DNA:"` + DNAEntryType + `",` +
`Agent:"` + AgentEntryType + `",` +
`Key:"` + KeyEntryType + `",` +
`Headers:"` + HeadersEntryType + `"` +
`Del:"` + DelEntryType + `"` +
`Migrate:"` + MigrateEntryType + `"` +
`}` +
`HashNotFound:null` +
`,Status:{Live:` + StatusLiveVal +
`,Rejected:` + StatusRejectedVal +
`,Deleted:` + StatusDeletedVal +
`,Modified:` + StatusModifiedVal +
`,Any:` + StatusAnyVal +
"}" +
`,GetMask:{Default:` + GetMaskDefaultStr +
`,Entry:` + GetMaskEntryStr +
`,EntryType:` + GetMaskEntryTypeStr +
`,Sources:` + GetMaskSourcesStr +
`,All:` + GetMaskAllStr +
"}" +
`,LinkAction:{Add:"` + AddLinkAction + `",Del:"` + DelLinkAction + `"}` +
`,PkgReq:{Chain:"` + PkgReqChain + `"` +
`,ChainOpt:{None:` + PkgReqChainOptNoneStr +
`,Headers:` + PkgReqChainOptHeadersStr +
`,Entries:` + PkgReqChainOptEntriesStr +
`,Full:` + PkgReqChainOptFullStr +
"}" +
"}" +
`,Bridge:{Caller:` + BridgeCallerStr +
`,Callee:` + BridgeCalleeStr +
"}" +
`,BundleCancel:{` +
`Reason:{UserCancel:"` + BundleCancelReasonUserCancel +
`",Timeout:"` + BundleCancelReasonTimeout +
`"},Response:{OK:"` + BundleCancelResponseOK +
`",Commit:"` + BundleCancelResponseCommit +
`"}}` +
`Migrate:{Close:"` + MigrateEntryTypeClose + `",Open:"` + MigrateEntryTypeOpen + `"}` +
`};`
)
// jsSanatizeString makes sure all quotes are quoted and returns are removed
func jsSanitizeString(s string) string {
s = strings.Replace(s, `\`, "%%%slash%%%", -1)
s = strings.Replace(s, "\n", "\\n", -1)
s = strings.Replace(s, "\t", "\\t", -1)
s = strings.Replace(s, "\r", "", -1)
s = strings.Replace(s, "\"", "\\\"", -1)
s = strings.Replace(s, "%%%slash%%%", `\\`, -1)
return s
}
// Call calls the zygo function that was registered with expose
func (jsr *JSRibosome) Call(fn *FunctionDef, params interface{}) (result interface{}, err error) {
var code string
switch fn.CallingType {
case STRING_CALLING:
code = fmt.Sprintf(`%s("%s");`, fn.Name, jsSanitizeString(params.(string)))
case JSON_CALLING:
if params.(string) == "" {
code = fmt.Sprintf(`JSON.stringify(%s());`, fn.Name)
} else {
p := jsSanitizeString(params.(string))
code = fmt.Sprintf(`JSON.stringify(%s(JSON.parse("%s")));`, fn.Name, p)
}
default:
err = errors.New("params type not implemented")
return
}
jsr.h.Debugf("JS Call: %s", code)
var v otto.Value
v, err = jsr.vm.Run(code)
if err == nil {
if v.IsObject() && v.Class() == "Error" {
jsr.h.Debugf("JS Error:\n%v", v)
var message otto.Value
message, err = v.Object().Get("message")
if err == nil {
err = errors.New(message.String())
}
} else {
result, err = v.ToString()
}
}
return
}
// jsProcessArgs processes oArgs according to the args spec filling args[].value with the converted value
func jsProcessArgs(jsr *JSRibosome, args []Arg, oArgs []otto.Value) (err error) {
err = checkArgCount(args, len(oArgs))
if err != nil {
return err
}
// check arg types
for i, arg := range oArgs {
if arg.IsUndefined() && args[i].Optional {
return
}
switch args[i].Type {
case StringArg:
if arg.IsString() {
args[i].value, _ = arg.ToString()
} else {
return argErr("string", i+1, args[i])
}
case HashArg:
if arg.IsString() {
str, _ := arg.ToString()
var hash Hash
hash, err = NewHash(str)
if err != nil {
return
}
args[i].value = hash
} else {
return argErr("string", i+1, args[i])
}
case IntArg:
if arg.IsNumber() {
integer, err := arg.ToInteger()
if err != nil {
return err
}
args[i].value = integer
} else {
return argErr("int", i+1, args[i])
}
case BoolArg:
if arg.IsBoolean() {
boolean, err := arg.ToBoolean()
if err != nil {
return err
}
args[i].value = boolean
} else {
return argErr("boolean", i+1, args[i])
}
case ArgsArg:
if arg.IsString() {
str, err := arg.ToString()
if err != nil {
return err
}
args[i].value = str
} else if arg.IsObject() {
v, err := jsr.vm.Call("JSON.stringify", nil, arg)
if err != nil {
return err
}
entry, err := v.ToString()
if err != nil {
return err
}
args[i].value = entry
} else {
return argErr("string or object", i+1, args[i])
}
case EntryArg:
// this a special case in that all EntryArgs must be preceeded by
// string arg that specifies the entry type
entryType, err := oArgs[i-1].ToString()
if err != nil {
return err
}
_, def, err := jsr.h.GetEntryDef(entryType)
if err != nil {
return err
}
var entry string
switch def.DataFormat {
case DataFormatRawJS:
fallthrough
case DataFormatRawZygo:
fallthrough
case DataFormatString:
if !arg.IsString() {
return argErr("string", i+1, args[i])
}
entry, err = arg.ToString()
if err != nil {
return err
}
case DataFormatLinks:
if !arg.IsObject() {
return argErr("object", i+1, args[i])
}
fallthrough
case DataFormatJSON:
v, err := jsr.vm.Call("JSON.stringify", nil, arg)
if err != nil {
return err
}
entry, err = v.ToString()
if err != nil {
return err
}
default:
err = errors.New("data format not implemented: " + def.DataFormat)
return err
}
args[i].value = entry
case MapArg:
if arg.IsObject() {
m, err := arg.Export()
if err != nil {
return err
}
args[i].value = m
} else {
return argErr("object", i+1, args[i])
}
case ToStrArg:
var str string
if arg.IsObject() {
v, err := jsr.vm.Call("JSON.stringify", nil, arg)
if err != nil {
return err
}
str, err = v.ToString()
if err != nil {
return err
}
} else {
str, _ = arg.ToString()
}
args[i].value = str
}
}
return
}
const (
HolochainErrorPrefix = "HolochainError"
)
func mkOttoErr(jsr *JSRibosome, msg string) otto.Value {
return jsr.vm.MakeCustomError(HolochainErrorPrefix, msg)
}
func numInterfaceToInt(num interface{}) (val int, ok bool) {
ok = true
switch t := num.(type) {
case int64:
val = int(t)
case float64:
val = int(t)
case int:
val = t
default:
ok = false
}
return
}
type fnData struct {
apiFn APIFunction
f func([]Arg, APIFunction, otto.FunctionCall) (otto.Value, error)
}
func makeOttoObjectFromGetResp(h *Holochain, jsr *JSRibosome, getResp *GetResp) (result interface{}, err error) {
_, def, err := h.GetEntryDef(getResp.EntryType)
if err != nil {
return
}
if def.DataFormat == DataFormatJSON {
json := getResp.Entry.Content().(string)
code := `(` + json + `)`
result, err = jsr.vm.Object(code)
} else {
result = getResp.Entry.Content().(string)
}
return
}
// NewJSRibosome factory function to build a javascript execution environment for a zome
func NewJSRibosome(h *Holochain, zome *Zome) (n Ribosome, err error) {
jsr := JSRibosome{
h: h,
zome: zome,
vm: otto.New(),
}
funcs := map[string]fnData{
"property": fnData{
apiFn: &APIFnProperty{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnProperty)
f.prop = args[0].value.(string)
var p interface{}
p, err = f.Call(h)
if err != nil {
return otto.UndefinedValue(), nil
}
result, err = jsr.vm.ToValue(p)
return
},
},
"debug": fnData{
apiFn: &APIFnDebug{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnDebug)
f.msg = args[0].value.(string)
f.Call(h)
return otto.UndefinedValue(), nil
},
},
"makeHash": fnData{
apiFn: &APIFnMakeHash{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnMakeHash)
f.entryType = args[0].value.(string)
f.entry = &GobEntry{C: args[1].value.(string)}
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
var entryHash Hash
if r != nil {
entryHash = r.(Hash)
}
result, _ = jsr.vm.ToValue(entryHash.String())
return result, nil
},
},
"getBridges": fnData{
apiFn: &APIFnGetBridges{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnGetBridges)
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
var code string
for i, b := range r.([]Bridge) {
if i > 0 {
code += ","
}
if b.Side == BridgeCallee {
code += fmt.Sprintf(`{Side:%d,Token:"%s"}`, b.Side, b.Token)
} else {
code += fmt.Sprintf(`{Side:%d,CalleeApp:"%s",CalleeName:"%s"}`, b.Side, b.CalleeApp.String(), b.CalleeName)
}
}
code = "[" + code + "]"
object, _ := jsr.vm.Object(code)
result, _ = jsr.vm.ToValue(object)
return
},
},
"sign": fnData{
apiFn: &APIFnSign{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnSign)
f.data = []byte(args[0].value.(string))
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
var b58sig string
if r != nil {
b58sig = r.(string)
}
result, _ = jsr.vm.ToValue(b58sig)
return
},
},
"verifySignature": fnData{
apiFn: &APIFnVerifySignature{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnVerifySignature)
f.b58signature = args[0].value.(string)
f.data = args[1].value.(string)
f.b58pubKey = args[2].value.(string)
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
result, err = jsr.vm.ToValue(r)
if err != nil {
return
}
return
},
},
"send": fnData{
apiFn: &APIFnSend{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnSend)
a := &f.action
a.to, err = peer.IDB58Decode(args[0].value.(Hash).String())
if err != nil {
return
}
msg := args[1].value.(map[string]interface{})
var j []byte
j, err = json.Marshal(msg)
if err != nil {
return
}
a.msg.ZomeType = jsr.zome.Name
a.msg.Body = string(j)
if args[2].value != nil {
a.options = &SendOptions{}
opts := args[2].value.(map[string]interface{})
cbmap, ok := opts["Callback"]
if ok {
callback := Callback{zomeType: zome.Name}
v, ok := cbmap.(map[string]interface{})["Function"]
if !ok {
err = errors.New("callback option requires Function")
return
}
callback.Function = v.(string)
v, ok = cbmap.(map[string]interface{})["ID"]
if !ok {
err = errors.New("callback option requires ID")
return
}
callback.ID = v.(string)
a.options.Callback = &callback
}
timeout, ok := opts["Timeout"]
if ok {
a.options.Timeout = int(timeout.(int64))
}
}
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
result, err = jsr.vm.ToValue(r)
return
},
},
"call": fnData{
apiFn: &APIFnCall{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnCall)
f.zome = args[0].value.(string)
var zome *Zome
zome, err = h.GetZome(f.zome)
if err != nil {
return
}
f.function = args[1].value.(string)
var fn *FunctionDef
fn, err = zome.GetFunctionDef(f.function)
if err != nil {
return
}
if fn.CallingType == JSON_CALLING {
/* this is a mistake.
if !call.ArgumentList[2].IsObject() {
return mkOttoErr(&jsr, "function calling type requires object argument type")
}*/
}
f.args = args[2].value.(string)
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
result, err = jsr.vm.ToValue(r)
return
},
},
"bridge": fnData{
apiFn: &APIFnBridge{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnBridge)
hash := args[0].value.(Hash)
f.token, f.url, err = h.GetBridgeToken(hash)
if err != nil {
return
}
f.zome = args[1].value.(string)
f.function = args[2].value.(string)
f.args = args[3].value.(string)
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
result, err = jsr.vm.ToValue(r)
return
},
},
"commit": fnData{
apiFn: &APIFnCommit{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnCommit)
entryType := args[0].value.(string)
entryStr := args[1].value.(string)
var r interface{}
entry := GobEntry{C: entryStr}
f.action.entryType = entryType
f.action.entry = &entry
r, err = f.Call(h)
if err != nil {
return
}
var entryHash Hash
if r != nil {
entryHash = r.(Hash)
}
result, err = jsr.vm.ToValue(entryHash.String())
return
},
},
"migrate": fnData{
apiFn: &APIFnMigrate{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnMigrate)
migrationType := args[0].value.(string)
DNAHash := args[1].value.(Hash)
Key := args[2].value.(Hash)
Data := args[3].value.(string)
var r interface{}
f.action.entry.Type = migrationType
f.action.entry.DNAHash = DNAHash
f.action.entry.Key = Key
f.action.entry.Data = Data
r, err = f.Call(h)
if err != nil {
return
}
var entryHash Hash
if r != nil {
entryHash = r.(Hash)
}
result, err = jsr.vm.ToValue(entryHash.String())
return
},
},
"query": fnData{
apiFn: &APIFnQuery{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnQuery)
if len(call.ArgumentList) == 1 {
options := QueryOptions{}
var j []byte
j, err = json.Marshal(args[0].value)
if err != nil {
return
}
jsr.h.Debugf("Query options: %s", string(j))
err = json.Unmarshal(j, &options)
if err != nil {
return
}
f.options = &options
}
var r interface{}
r, err = f.Call(h)
if err != nil {
return
}
qr := r.([]QueryResult)
defs := make(map[string]*EntryDef)
var code string
for i, qresult := range qr {
if i > 0 {
code += ","
}
var entryCode, hashCode, headerCode string
var returnCount int
if f.options.Return.Hashes {
returnCount += 1
hashCode = `"` + qresult.Header.EntryLink.String() + `"`
}
if f.options.Return.Headers {
returnCount += 1
headerCode, err = qresult.Header.ToJSON()
if err != nil {
return
}
}
if f.options.Return.Entries {
returnCount += 1
var def *EntryDef
var ok bool
def, ok = defs[qresult.Header.Type]
if !ok {
_, def, err = h.GetEntryDef(qresult.Header.Type)
if err != nil {
return
}
defs[qresult.Header.Type] = def
}
r := qresult.Entry.Content()
switch def.DataFormat {
case DataFormatRawJS:
entryCode = r.(string)
case DataFormatString:
entryCode = fmt.Sprintf(`"%s"`, jsSanitizeString(r.(string)))
case DataFormatLinks:
fallthrough
case DataFormatJSON:
entryCode = fmt.Sprintf(`JSON.parse("%s")`, jsSanitizeString(r.(string)))
default:
err = errors.New("data format not implemented: " + def.DataFormat)
return
}
}
if returnCount == 1 {
code += entryCode + hashCode + headerCode
} else {
var c string
if entryCode != "" {
c += "Entry:" + entryCode
}
if hashCode != "" {
if c != "" {
c += ","
}
c += "Hash:" + hashCode
}
if headerCode != "" {
if c != "" {
c += ","
}
c += "Header:" + headerCode
}
code += "{" + c + "}"
}
}
code = "[" + code + "]"
jsr.h.Debugf("Query Code:%s\n", code)
object, _ := jsr.vm.Object(code)
result, err = jsr.vm.ToValue(object)
return
},
},
"get": fnData{
apiFn: &APIFnGet{},
f: func(args []Arg, _f APIFunction, call otto.FunctionCall) (result otto.Value, err error) {
f := _f.(*APIFnGet)
options := GetOptions{StatusMask: StatusDefault}
if len(call.ArgumentList) == 2 {
opts, ok := args[1].value.(map[string]interface{})
if ok {
mask, ok := opts["StatusMask"]
if ok {
// otto returns int64 or float64 depending on whether
// the mask was returned by constant or addition so
maskval, ok := numInterfaceToInt(mask)
if !ok {
err = errors.New(fmt.Sprintf("expecting int StatusMask attribute, got %T", mask))
return
}
options.StatusMask = int(maskval)
}
mask, ok = opts["GetMask"]
if ok {
maskval, ok := numInterfaceToInt(mask)
if !ok {
err = errors.New(fmt.Sprintf("expecting int GetMask attribute, got %T", mask))
return
}
options.GetMask = int(maskval)
}
local, ok := opts["Local"]
if ok {
options.Local = local.(bool)
}
}